Wheel-dresser



w; E. ROSS.

WHEEL DRESSER.

APPLICATION HLED FEB. I7. 19]?- Patented Feb. 10, 1920.

WILLIAIIE E. ROSS, 0F CLEVELAND, UHIQ, F

COMPANY, OF CLEVELAND, 0

ssrenon ro rrrn ROSS iuanurao'ruarne o, a conroaarroiv or onto.

"WHEEL-DRESSER.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application filed. February 17, 1917. Serial No. 149,332.

T0 at whom it may concern:

Be it known that 1, WILLIAM E. Ross, a citizen of the United States,resident of Cleveland, county of Cuyahoga, and State of Ohio, haveinvented new and useful Improvements in -l Vheel-Dressers, of which thefollowing is a specification, the principle of the invention beingherein explained and the best mode in which 1 have contemplated applyingthat principle, so as to distinguish it from other inventions.

My invention relates to a device for dress ing wheels and particularlyto that class of such devices used for dressing carborundum or othercomposition wheels. In its general nature, said invention relates todevices shown, described and claimed in U. Letters Patent No. 1,256,167issued Feb. 12, 1918, upon my invention in' wheel dressers. My inventionis designed to have an effect upon the wheel that is dressed whollydifierent from that effected by any other device of this character withwhich. I am ac quainted. Furthermore, my improved wheel dresser isdesigned to greatly increase the amount of work which can be obtainedwith a wheel of a given character.

The annexed drawing and the following description set forth in detailcertain means embodying my invention, the disclosed means, however,constituting but one of various mechanical forms in which the principleof the invention may be applied.

In said annexed drawing Figure 1 represents a side elevationof a toolholder in which my improved wheel dresser is mounted.

Fig. 2 represents, upon an enlarged scale, a broken plan view of myimproved wheel dresser;

Fig. 3 represents a longitudinal section taken in the plane indicated bythe line HI HI, Fig. 1; and

Fig. 4 represents, upon an enlarged scale, a section taken in the planesindlcated by the lines lVlV, Fig. 1, Figs. 3 and 4 illustrating themethod of mounting the dresser in a suitable holder.

llhe illustrated embodiment of my inven tion comprises a rotatablemember 1 in which grooves 2 are formed either by milling, grinding, diecasting, die sinking, or in any other approved manner. These grooves 2,in the form shown, are of equal width throughout, extend from side toside of the member 1, and the sectors thereof lie one.- half in planesparallel with the axis ofthe member 1 and one-half in planes at rightangles to said axis, the parallel and right angle sectors of thegrooves, in the form shown, being of equal length, thus producing aplurality of continuous crooked angular raised dressing areas 3complementary to the g'ooves 2, and having two series of parallelcutting edges, the edges inone series being parallel to the axis of themember 1 and the edges in the other series lying in planes at rightangles to said axis. Thus the plurality of entirely disconnected areas 3is formed which, in the form shown, are equal in size, and lie in thesurface of the cylinder whose axis coincides with the axis of rotationof the member 1. These areas 3, as shown, thus constitute a plurality ofseparate relatively staggered areas'systematically arranged anddetachedboth lengthwise and crosswise of the cylinder.

I have found that by altering the size of the areas 3 I obtain differentresults from the wheels to which the dresser is applied. When it isdesired that the wheel to be dressed shall rough finish the work Idecrease the size of the areas. This may be done by increasing the widthof the grooves 2. hen the sum of all the areas is equal to from twenty(20) to forty (40) per cent. of the possible cylindrical area of the memher the tool is suitable for preparing-a carborundum or emery wheel forrough finishing, when this sum is increased to from forty (40) toeightyrfive (85) per cent. of the possible cylindrical. area, the wheelto which the tool is applied will be suitable for line finishing thework.

It is desirable and conducive to efliciency to have the parts of theouter surface of the tool remaining, distributed with a substantialuniformity throughout the periphery of the wheel, yet, it is notessential that this uniformity be more than reasonably approximate indegree; and I wish to-be understood as meaning when I use the worduniformity merely a reasonable approximation to absolute uniformity orsuch uniformity as will produce the same or similar result to thatproduced by the device shown. It is obvious also that while the limitsof proportion which I have specified above are the ordinary limits inconnection with carborundum wheels of usual composition, theseproportions of dimensions may be varied to some extent, when my dressingwheels are constructed to dress wheels of novel or less well knowncomposition, and I desire accordingly to be understood as notrestricting myself to the percentages specified above, save in thepresent connection.

It will be noted from the above described construction that every planepassing through member 1 at right angles to its axis intersects theareas 8, so that no part of the grinding wheel to which the dresser isapplied escapes the action of the cutting edges, regardless of the speedat which the dresser is caused to travel across the periphery of thegrinding wheel. Uniformity of operation upon the latter is thusobtained.

I have found that wheels dressed with the above described tool willperform a grinding operation for a greatly increased length of timebefore it is necessary to again redress them, as compared with grindingwheels dressed by means of other devices heretofore known and of which Iam aware.

The above described member may be mounted in any suitable holder orhandle but I have illustrated one form of holder which I have found tobe suitable and which I shall now describe, the dressing member 1therein indicated being shown as a shell securely impressed or otherwisesuitably fixed to elements now to be described. Said holder consists ofa handle portion 4 formed with a yoke whose two arms 5 receive inner andouter races 7 and 11 provided with suitable ball-bearings 6, the innerrace 7 being securely fastened to a member 8 intersecting and secured inthe arms 5, and the outer race 11 being secured by a shell or covermember 10, there being provided a suitable separator member 7 as shown.The shell mem ber 1, with its presenting or face surface formed with thecomplementary grooves and dressing areas, as hereinbefore fully explained, is secured to said shell or cover member 10. In order thatdamaging ex traneous matter may be kept from the ballbearings, I havebushing members 9 securely interposed, between the arms 5 of the holderand the roller bearings. These elements constitute simply one way ofmounting the dressing member and may be varied as requirements andpreferences dictate.

Having fully described my invention, what I claim and desire to secureby Letters Patent is 1. In wheel dressers, a body portion having formedupon its presenting or face surface a plurality of angular grooves,creating a plurality of raised dressing areas each provided with aplurality of cutting edges progressively fed to the work.

2. In a wheel dresser, arotatable member whose dressing surface isprovided with a plurality of continuous crooked grooves comprised of aplurality of sectors forming a plurality of isolated areas alternatingwith said grooves, such groove sectors being arranged in a generallyoblique direction from side to side of the member.

3. In a wheel dresser, a rotatable member provided with a plurality ofperipheral areas lying in the surface of a cylinder having its axiscoinciding with the axis of said member, each such area being providedwith cutting edges, meeting each other at an angle, and formed byoblique continuous depressions in the surface of the cylinder, each suchdepression comprising a plurality of angularly related sectors.

41-. In a wheel dresser, a rotatable member provided with a plurality ofperipheral, disconnected areas bounded wholly by con tinuous lines whoselimits are the sides of the member and each comprising two series ofparallel sectors, the sectors of the two series being alternatelyarranged, said areas lying in the surface of a cylinder having its axiscoinciding with the axis of rotation of said member, each of said areasincluding a a plurality of pairs of cutting edges angularly related toeach other, all of said areas being fixed relatively to each other, saidareas extending crosswise and generally lengthwise of the cylinder.

5. In a wheel dresser, a rotatable member provided with a plurality ofperipheral, disconnected areas bounded wholly by continuous lines whoselimits are the sides of the member and each comprising a plurality ofrelatively angular sectors, said areas lying in the surface of acylinder having its axis coinciding with the axis of rotation of saidmember, each of said areas including a plurality of pairs of cuttingedges angularly related to each other, all of said areas being fixedrelatively to each other, said areas ex tending crosswise and generallylengthwise of the cylinder.

6. In a wheel dresser, a rotatable member provided with a plurality ofperipheral relatively fixed and disconnected areas lying in the surfaceof a cylinder having its axis coinciding with the axis of said memberand so located that every plane passing through the member perpendicularto said axis will intersect such areas, each of the latter in cluding aplurality of pairs of cutting edges of equal length angularly related toeach other and respectively lying in planes containing the axis of themember and in planes at right angles thereto.

7. I11 a wheel dresser, a rotatable member provided with a multiplicityof disconnected areas formed by continuous grooves comprising aplurality of sectors disposed in planes containing the axis of themember and a plurality of alternate sectors disposed in planesperpendicular to the axis of the member, the outermost boundaries ofsaid grooves being lines lying in the surface of a cylinder, having itsaxis coinciding with the axis of said member, said areas extendingcrosswise and generally lengthwise of the cylinder and being-so locatedthat every plane passing through said member and perpendicular to theaxis will intersect said areas.

8. In a wheel dresser, a rotatable member provided with a pluralityofperipheral, disconnected areas bounded wholly by continuous lines whoselimits are the sides of the member and each comprising a plurality ofalternately arranged sectors disposed in planes containing the axis ofthe member and in planes at right angles thereto, respectively, saidareas lying in the surface of a cylinder having its axis coinciding withthe axis of rotation of said member and so located that every planepassing through the member and perpendicular to said axis will intersectsuch areas, each of the latter including a plurality of pairs of cuttingedges angularly related to each other, all of said areas being fixedrelatively to each other, said areas extending crosswise and generallylengthwise of the cylinder.

9. In a wheel dresser for preparing grinding wheels for fine finishingthe work, a rotatable member provided with a peripheral surface lying inthe surface of a cylinder having its axis coinciding with the axis ofsaid member, the possible peripheral area determined by the outerdimensions of the member being interrupted and the remain ing surfacebeing more than forty per cent. of such possible surface, and saidremaining surface consisting of detached areas bounded by continuous,generally oblique, crooked grooves.

10. In a wheel dresser, for preparing grinding wheels for fine finishingthe work, a rotatable member provided with a peripheral surface lying inthe surface of a cylinder having its axis coinciding with the axis ofsaid member, the possible peripheral area determined by the outerdimensions of the member being interrupted and the remaining surfacebeing more than forty per cent. and less than eighty-five per cent. ofsuch possible surface, said remaining surface consisting of detachedareas bounded by continuous, generally oblique, rocked grooves.

11. In a wheel dresser, a rotatable member provided with a multiplicityof relatively disconnected areas formed by continuous, generallyoblique, crooked grooves whose outermost boundaries are lines lying inthe surface of cylinder, said areas being so located that every planepassing through said member and perpendicular to the axis will intersectsaid areas, the sum of said areas being equal to more than forty percent. of the possible peripheral area determined by the outer dimensionsof the member.

12. In a wheel dresser, a rotatable member provided with a multiplicityof disconnected areas formed by continuous, generally oblique, crookedgrooves whose outermost boundaries are lines lying in the surface of acylinder, said areas being so located that every plane passing throughsaid member and perpendicular to the axis will intersect said areas, thesum of said areas being equal to more than forty per cent. and less thaneighty-five per cent. of the possible peripheral area determined by theouter dimensions of the member.

13. In a wheel dresser, a rotatable membe formed in its outer surfacewith dressing areas and disconnected recesses dis ributed thereamongstcreating a plurality of cutting edges for each of said areas, the planescontaining each two adjacent cutting edges of said areas beingrelatively perpendicular.

14:. In wheel dressers, a body portion formed upon its presenting orface surface with a plurality of isolated recesses having side wallslying in planes alternately paral: lel with, and at right angles to, agiven plane,thus forming raised rectangular dressing areas.

15. In wheel dressers, a body portion formed upon its presenting or facesurface with a plurality of isolated recesses having side walls lying inplanes alternately parallel with, and at right angles to, a given plane,forming raised dressing areas respectively comprised of a plurality ofrectangular sections.

16. In wheel dressers, a body portion formed upon its presenting or facesurface with a plurality of isolated recesses having side walls lying inplanes alternately lel with, and at right angles to, a given plane,forming raised dressing areas whose perimeters comprise a multiplicityof lines (more than four) of which each two adjacent ones meet to form aright angle.

17. In wheel dressers, a body portion formed upon its presenting or facesurface with a plurality of recesses extending crosswise and generallylength-wise of said surface and having side walls lying in planesalternately parallel with, and at right angles to, the axis of the bodyportion, thus forming a plurality of raised dressing areas.

18. In wheel dressers, a body portion formed upon its presenting or facesurface with a plurality of isolated recesses having side walls lying inplanes alternately parallel with, and at right angles to, the axis ofthe body portion, thus forming raised rectangular dressing areaspresenting simultaneously to the work all points of alternate cuttingedges and progressively to the work the points of alternate cuttingedges.

19. In a wheel dresser, a body portion having formed upon its presentingor face surface a plurality of oblique grooves extending from side toside of the member and creating a plurality of raised dressing areas,the grooves being so formed that each dressing area consists of aplurality of rectangular sections progressively fed to the work.

520. In a wheel dresser, a body portion having formed upon itspresenting or face surface a plurality of grooves extending generallyobliquely of said surface and creating a plurality of raised areas eachcomprising a plurality of connected sections progressively fed to thework from one end of the respectively adjacent grooves to the other endthereof.

.21. In wheel dressers. a body portion formed upon its presenting orface surface with a plurality of angular recesses eX- tcnded from sideto side of the body and having side walls lying in planes alternatelyparallel with, and at right angles to a given plane, thus forming aplurality of isolated raised dressing areas having relativelyrightangular adjacent cutting edges.

2:2. In wheel dressers, a body portion formed upon its presenting orface surface with a plurality of angular recesses extended from side toside of the body and having side walls lying in planes alternatelyparallel with, and at right angles to, the axis of the body portion,thus forming a plurality of isolated raised dressing areas havingrelatively right-angular adjacent cutting edges.

23. In a wheel dresser, a rotatable member provided with a plurality ofperipheral relatively fixed and disconnected areas lying in the surfaceof a cylinder having its axis coinciding with the aXis of said member,each such area being provided with two cutting edges meeting each otherto form an angle of ninety degrees (90), one of said edges lying in aplane parallel with the member axis.

24:. In a wheel dresser, a rotatable member formed in its outer surfacewith crooked grooves extending cross-wise and generally length-wise ofthe surface, thus creating a plurality of dressing areas.

25. In a wheel dresser, a rotatable member formed in its outer surfacewith crooked grooves extending crosswise and generally lengthwise of thesurface, thus creating a plurality of isolating dressing areas.

26, In a wheel dresser, a member formed with a longitudinal centralspindle-bearing and with crooked, generally oblique, peripheral,uninterrupted grooves of uniform outer width and extended from side toside of the member, thus creating a plurality of raised isolateddressing areas.

27. In a wheel dresser, a rotatable member formed in its outer surfacewith dressing areas and recesses distributed thereainongst creating aplurality of cutting edges for each of said areas, the planes containingeach two adjacent cutting edges of said areas being respectivelyparallel with, and perpendicular to, the axis of the body portion.

28. In a wheel dresser, a rotatable mem ber formed in its outer surfacewith dressing areas and generally oblique recesses distributedthereamongst creating a plurality of cutting edges for each of saidareas, the planes containing each two adjacent cutting edges of saidareas being respectively parallel with, and perpendicular to, the axisof the body portion.

S igned by me, this 15th day of February, 191

WILLIAM E. ROSS.

